1021202002100 has 72 divisors (see below), whose sum is σ = 2532726936768. Its totient is φ = 350106220800.

The previous prime is 1021202002087. The next prime is 1021202002103. The reversal of 1021202002100 is 12002021201.

It is a happy number.

1021202002100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021202002103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17101295 + ... + 17160905.

Almost surely, 2^{1021202002100} is an apocalyptic number.

1021202002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021202002100 is an abundant number, since it is smaller than the sum of its proper divisors (1511524934668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021202002100 is a wasteful number, since it uses less digits than its factorization.

1021202002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84105 (or 84098 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1021202002100 its reverse (12002021201), we get a palindrome (1033204023301).

The spelling of 1021202002100 in words is "one trillion, twenty-one billion, two hundred two million, two thousand, one hundred".